Dayton
Dayton 5ZVC3 Circuit Breaker NDB2-63 C2/3 2A 3P 480V 7.5kA
Three-pole supplemental protector rated 2 A at 480 V AC with 7.5 kA interrupting capacity, DIN-rail mount and screw-clamp terminals
- ColorTransparent
- Protects 3-phase circuits with 7.5 kA interrupting capacity at 480 V AC
- Thermal-magnetic trip responds to overloads and short circuits without nuisance trips
- DIN-rail mounting fits standard control-panel assemblies
- Screw-clamp terminals accept 14 to 4 AWG conductors for secure wiring
- UL 1077 recognised supplemental protector meets North American safety requirements
Product identity
The Dayton 5ZVC3 is a three-pole supplementary protector rated at 2 A and 480 V AC with a 7.5 kA interrupting capacity. It is designed for DIN-rail mounting in control panels where supplemental overcurrent protection is required.
Thermals noise and power
The device uses a thermal-magnetic trip mechanism calibrated to a C-curve characteristic for balanced overload and short-circuit response. No active cooling or fan is present, so operation is silent and power draw is limited to the inherent contact resistance of the screw-clamp terminals.
Accessories and software
The package supplies only the circuit breaker unit itself; no auxiliary contacts, shunt trips, configuration software or mounting hardware are included. Installers must provide DIN rail, wiring sized between 14 AWG and 4 AWG, and any required busbars or labels separately.
Highlights
- Protects 3-phase circuits with 7.5 kA interrupting capacity at 480 V AC
- Thermal-magnetic trip responds to overloads and short circuits without nuisance trips
- DIN-rail mounting fits standard control-panel assemblies
- Screw-clamp terminals accept 14 to 4 AWG conductors for secure wiring
- UL 1077 recognised supplemental protector meets North American safety requirements
Specifications
| Brand | DAYTON |
|---|---|
| Color | Transparent |
Questions about this item
How do I mount this three-pole breaker on DIN rail and what is the common wiring mistake?
Clip the unit onto a standard DIN rail until the latch engages, then insert each conductor fully into the screw-clamp terminals and tighten; the frequent error is leaving wire strands outside the clamp.
What upkeep will the thermal-magnetic trip mechanism need over time?
Periodically operate the toggle to verify free movement, inspect screw-clamp terminals for loosening, and replace the breaker if it trips at or below the 2 A rating during normal load.
What is the first limitation reached during a sustained fault on a 480 V AC circuit?
The 7.5 kA interrupting rating at 480 V AC is the limiting factor; fault currents above that level require upstream protection with a higher AIR rating.
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